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Old 05-28-2013, 05:42 PM   #1
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Sprinkler System Causing Other GFCIs to trip


Ok, here is the situation.

I recently turned my sprinkler system back on for the summer. The sprinkler system (controller) is plugged into a Non-GFCI receptacle in the garage. The garage circuit is a 20A individual circuit.

When the sprinkler system is plugged in, a couple of the GFCI receptacles in my kitchen tripped. I know, with a certainty, that these kitchen circuits are not tied into the garage in any way, other than the breakers for these circuits are both in the same electrical panel in my basement.

So.... how is it possible that the sprinkler being plugged in could cause these other GFCIs to trip, when they are on their own separate circuits??? I am dumbfounded.

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Old 05-28-2013, 11:19 PM   #2
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Sprinkler System Causing Other GFCIs to trip


Could the sprinkler system be spraying in the kitchen window.....

Sorry, given the facts as you stated with certainity, I am just as dumfounded.

Actually, do they do it repeadidly, or consistantly,,,, could it be be coincidental.

To the best of my knowledge, all your sprinkler system heads and manifolds are controlled only from the controller and its transformer on your one circut. Are there any different type sprinkler systems where its transformer could be on the kitchen circut.

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Old 05-28-2013, 11:29 PM   #3
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Sprinkler System Causing Other GFCIs to trip


The sprinkler system could be acting as unwanted earth
this would trip the gfci.

Somewhere somehow your sprinkler system
is coming into contact with the earth line on the gfci
power circuit, if it provides an secondary path to earth
this would trip the gfci.
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Old 05-28-2013, 11:33 PM   #4
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Sprinkler System Causing Other GFCIs to trip


Quote:
Originally Posted by dmxtothemax View Post
The sprinkler system could be acting as unwanted earth
this would trip the gfci.

Somewhere somehow your sprinkler system
is coming into contact with the earth line on the gfci
power circuit, if it provides an secondary path to earth
this would trip the gfci.
?????
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Old 05-28-2013, 11:40 PM   #5
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Sprinkler System Causing Other GFCIs to trip


Quote:
Originally Posted by dmxtothemax View Post
The sprinkler system could be acting as unwanted earth
this would trip the gfci.

Somewhere somehow your sprinkler system
is coming into contact with the earth line on the gfci
power circuit, if it provides an secondary path to earth
this would trip the gfci.
DMX... How can an additional ground to the GFI ground affect the GFI.

If that is what you mean, the op ought to be able to disconnect his GFI grounds, and they should work fine and not trip (as a test, because he would no longer have an EGC sytem at his GFIs.) Right?

Best...

Peter
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Old 05-29-2013, 05:54 AM   #6
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Sprinkler System Causing Other GFCIs to trip


Quote:
Originally Posted by dmxtothemax View Post
The sprinkler system could be acting as unwanted earth
this would trip the gfci.

Somewhere somehow your sprinkler system
is coming into contact with the (earth line on the) gfci
power circuit, if it provides an secondary path to earth
this would trip the gfci.
Sorry I did a typo there !
I suspect there is a leakage path from these power circuits
And the sprinkler system is the cause,
and the sprinkler system could also be providing
an earth path for some of this current,
this would trip the gfci
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Old 05-29-2013, 09:22 AM   #7
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Sprinkler System Causing Other GFCIs to trip


I think the term earth in this case refers to the neutral not the ground. Difference in terms between US and Australia.
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Old 05-29-2013, 11:42 AM   #8
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Sprinkler System Causing Other GFCIs to trip


Quote:
Originally Posted by dmxtothemax View Post
Sorry I did a typo there !
I suspect there is a leakage path from these power circuits
And the sprinkler system is the cause,
and the sprinkler system could also be providing
an earth path for some of this current,
this would trip the gfci
Gotcha.... Thanks

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